HP 8560A

17. Signal ID Oscillator Adjustment
Cables
BNC, 122 cm (48 in) (2 required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A
Test Cable, BNC (m) to SMB (f)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85680-60093
Procedure
1.
2.
3.
4.
5.
6.
7.
Set the HP 8560A LuNE) switch off, disconnect the power cord, and remove the analyzer
cover. Fold down the Al5 RF and Al4 Frequency Control assemblies. Prop up the A14
Frequency Control assembly.
Connect the HP 8560A CAL OUTPUT to the INPUT 500 using an adapter. Disconnect
the W29 cable from A15J601 (10.7 MHz IF out) and connect the SMB end of the test
cable to A15J601. Connect the rest of the equipment as shown in Figure 2-20.
Reconnect the power cord and set the luNE) switch on. After the power-on sequence is
complete, set the HP 8560A controls as follows:
CENTERFREQ
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..300MHz
SPAN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Hz
Press (mCTRL) INTERNAL MIXER SIG ID ON SGL SWP.
Press (INSTR PRESET) on the HP 8566A/B and set the controls as follows:
CENTER FREQUENCY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . 10.7 MHz
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 kHz
Set the HP 5343A controls as follows:
SAMPLE RATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully Counterclockwise
50R-1MR SWITCH
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
10 Hz-500 MHz/500 MHz-26.5 GHz SWITCH . . . . . . . . . . . .10 Hz-500 MHz
If no signal is displayed on the HP 8566A/B, adjust A15C629 SIG ID until a signal is
displayed.
Note
If the 298 MHz SIG ID oscillator is severely mistuned, it might be necessary to
widen the span on the HP 8566A/B to see the shifted sweep.
8. Rotate A15C629 SIG ID slightly while observing the HP 8566A/B display. If the
displayed signal frequency does not change, press SGL SWP on the HP 8560A.
2-64 Adjustment Procedures